Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KT9USA callsign genealogy
Currently held by Tochamnanvit, Kieththep
The FCC publishes a previous_call_sign on
every amateur license — a self-link to the licensee's prior callsign.
Following those links produces the chain below.
Previous callsigns
Older callsigns held by KT9USA's current licensee, walking backwards.
- Tochamnanvit, KieththepILgranted 2019-10-18cancelled 2019-11-13
Successor callsigns
Callsigns held now by people who previously held KT9USA.
No current licensee on record previously held this callsign.